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Debt - Summary of Company's Total Outstanding Borrowings (Parenthetical) (Detail)
$ in Millions
Mar. 31, 2019
USD ($)
Debt Instrument [Line Items]  
Line of credit facility, available borrowing capacity $ 45.0
Weighted average interest rate 5.00%
Term Loans [Member]  
Debt Instrument [Line Items]  
Debt instrument interest rate 5.00%
Term Loans [Member] | LIBOR [Member]  
Debt Instrument [Line Items]  
Debt instrument interest rate 2.50%
Term Loans [Member] | Base Rate [Member]  
Debt Instrument [Line Items]  
Debt instrument interest rate 2.50%
Revolving Credit Facility [Member]  
Debt Instrument [Line Items]  
Debt instrument interest rate 5.00%
Revolving Credit Facility [Member] | LIBOR [Member]  
Debt Instrument [Line Items]  
Debt instrument interest rate 2.50%
Revolving Credit Facility [Member] | Base Rate [Member]  
Debt Instrument [Line Items]  
Debt instrument interest rate 2.50%